Table 1: Smoking pattern characteristics in the adult population. Maracaibo, Venezuela.

Percentil
p
p5th p25th p50th p75th p95th
Age (Years) < 0.0*
Non-smokers 18 24 35 48 67
Smokers 20 28 40 50 60
Former smokers 23 36 48 56 69
Age of initiation (years) 0.08**
Smokers 14 16 19 25 36
Former smokers 14 16 18 24 35
Intensity (Cigarette/day) 0.28**
Smokers 1 2 6 10 20
Former smokers 1 2 4 10 40
Time smoking (Years) -
Smokers 1 6 16 28 40
Time without smoking (Years) -
Non-smoker 0.6 3 10 20 35

*Kruskal Wallis test; **U Mann-Whitney test.